Optical beam splitting system

Abstract

The embodiment of the utility model discloses an optical beam splitting system. The optical beam splitting system comprises a beam splitter module, a photovoltaic assembly module and a photo-thermal receiving module, the spectroscope module comprises a first surface and a second surface which deviate from each other, the first surface and the second surface protrude in the direction that the first surface points to the second surface, and the curvature of the spectroscope module is variable; the spectroscope module is used for reflecting light with a specific wave band in the incident sunlight on one side of the first surface to obtain a convergent light beam, and transmitting light with an unspecific wave band in the incident sunlight to obtain a scattered light beam; the photo-thermal receiving module is located on the propagation path of the convergent light beams, and the photovoltaic assembly module is located on the propagation path of the scattered light beams. According to the optical beam splitting system, the energy of the full spectrum of sunlight is fully utilized, the photoelectric energy conversion efficiency of the whole system is improved, the utilization rate of the sunlight is improved, the influence of wavebands such as ultraviolet rays on aging of photovoltaic materials is avoided, and the service life of the photovoltaic materials is prolonged.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of solar energy application, especially relates to an optical light splitting system. BACKGROUND

[0002] In the energy field, solar energy as a clean renewable energy gets more and more application, and in the solar power generation field, solar power generation mode has photovoltaic power generation and heat power generation two kinds. Photovoltaic light heat comprehensive utilization is a big trend of present solar energy utilization, under the condition of guaranteeing photovoltaic cell conversion rate promotion, how to fully utilize the energy of solar full spectrum, improve the energy conversion efficiency of whole system becomes the urgent technical demand in the field of photovoltaic light heat comprehensive utilization.

[0003] However, at present, the utilization of solar energy in the photovoltaic industry is according to the reaction of different materials to certain solar wave band to form the conversion of solar energy, so that the utilization rate of solar energy is relatively single, it is difficult to greatly improve the utilization rate of solar energy, and there will be the phenomenon of photovoltaic material aging caused by ultraviolet radiation. CONTENT OF UTILITY MODEL

[0004] The embodiment of the utility model provides a kind of optical light splitting system, to fully utilize the energy of solar full spectrum, improve the photoelectric energy conversion efficiency of whole system, improve the utilization rate of solar light, prolong the service life of photovoltaic material.

[0005] The embodiment of the utility model provides an optical light splitting system, including light splitting mirror module, photovoltaic assembly module and light heat receiving module;

[0006] The light splitting mirror module includes mutually divergent first surface and second surface, in the direction that the first surface points to the second surface, the first surface and the second surface are protruding, and the curvature of the light splitting mirror module is variable;

[0007] The light splitting mirror module reflects the light of specific wave band in the sunlight incident on the first surface side, obtains convergent light beam, and transmits the light of non-specific wave band in the incident sunlight, obtains scattering light beam;

[0008] The light heat receiving module is located on the propagation path of the convergent light beam, and the photovoltaic assembly module is located on the propagation path of the scattering light beam.

[0009] Optionally, the light splitting mirror module includes a light splitting mirror unit and a light splitting coating, and the light splitting coating is located on one side surface of the light splitting mirror unit;

[0010] The light-splitting coating separates the specific waveband of light from the non-specific waveband of light in the incident sunlight, wherein the specific waveband of light is reflected by the light-splitting coating and generates the convergent light beam under the converging effect of the light-splitting mirror unit, and the non-specific waveband of light is transmitted through the light-splitting mirror unit and the light-splitting coating in turn to generate the scattering light beam.

[0011] Optionally, the light-splitting mirror module comprises a light-splitting mirror unit, a first light-splitting coating and a second light-splitting coating, the first light-splitting coating and the second light-splitting coating are respectively located on two mutually facing away side surfaces of the light-splitting mirror unit, and the second light-splitting coating is located on a side of the light-splitting mirror unit close to the photovoltaic module.

[0012] The first light-splitting coating separates the first specific sub-waveband of light from the non-first specific sub-waveband of light in the incident sunlight, wherein the first specific sub-waveband of light is reflected by the first light-splitting coating, and the non-first specific sub-waveband of light is transmitted through the light-splitting mirror unit.

[0013] The second light-splitting coating separates the second specific sub-waveband of light from the non-second specific sub-waveband of light in the non-first specific sub-waveband of light, wherein the second specific sub-waveband of light is reflected by the second light-splitting coating, and the first specific sub-waveband of light and the second specific sub-waveband of light generate the convergent light beam under the converging effect of the light-splitting mirror unit, and the non-second specific sub-waveband of light is transmitted through the second light-splitting coating; wherein the sum of the first specific sub-waveband of reflected light corresponding to the first light-splitting coating and the second specific sub-waveband of reflected light corresponding to the second light-splitting coating is the specific waveband.

[0014] Optionally, the light-splitting mirror module comprises at least two light-splitting mirror units and at least two light-splitting coatings, the number of the light-splitting mirror units is the same as the number of the light-splitting coatings, and the light-splitting coatings are located on a side surface of the light-splitting mirror units one by one.

[0015] The light-splitting coating corresponding to the first light-splitting mirror unit separates the specific sub-waveband of light from the non-specific sub-waveband of light in the incident sunlight, and the other light-splitting mirror units are located on the propagation path of the non-specific sub-waveband of light in turn, the specific sub-waveband of reflected light corresponding to each light-splitting coating is different, and the sum of the specific sub-waveband of reflected light corresponding to each light-splitting coating is the specific waveband.

[0016] Optionally, the light-splitting coating corresponding to the first light-splitting mirror unit is located on a convex side surface of the light-splitting mirror unit.

[0017] Optionally, the light-splitting coating is composed of dielectric thin layer materials with different refractive indexes and different thicknesses, or is composed of metal and the dielectric thin layer materials deposited alternately.

[0018] Optionally, a projection shape of the light-splitting mirror unit on a first plane is a polygon, and a length of any side of the polygon is greater than 600nm; wherein the first plane is perpendicular to a thickness direction of the light-splitting mirror unit.

[0019] Optionally, a thickness of the light-splitting mirror unit ranges from 0.5mm to 5mm.

[0020] Optionally, a height difference between an edge of the light-splitting mirror unit and a center of the light-splitting mirror unit ranges from 0.3mm to 100mm.

[0021] Optionally, a material of the light-splitting mirror unit includes at least one of ultra-white glass or high borosilicate glass.

[0022] Optionally, a material of the light-heat receiving module includes light-conducting material or heat-conducting material.

[0023] Embodiments of the utility model provide a kind of optical light splitting system, which includes light-splitting mirror module, photovoltaic module and light-heat receiving module;Light-splitting mirror module includes mutually divergent first surface and second surface, in the direction of first surface pointing to second surface, first surface and second surface are convex, and the curvature of light-splitting mirror module is variable;Light-splitting mirror module carries out reflection to the light of specific wave band in the sunlight incident on first surface side, obtains convergent light beam, and carries out transmission to the light of non-specific wave band in the incident sunlight, obtains scattering light beam;Light-heat receiving module is located on the propagation path of convergent light beam, and photovoltaic module is located on the propagation path of scattering light beam.The optical light splitting system in this utility model uses light-splitting mirror module to carry out light splitting processing to the sunlight received, to provide the light of specific wave band in sunlight to light-heat receiving module, provide the light of non-specific wave band in sunlight to photovoltaic module, and the sunlight wave band required by chemical material reaction in photovoltaic module and light-heat receiving module is different, that is, the light-splitting mirror module can realize the light required by photovoltaic module is transmitted to photovoltaic module, the light not required by photovoltaic module is filtered and reflected to light-heat receiving module, and the light of full wave band of sunlight can be utilized by photochemical material or thermochemical material, so that different chemical materials simultaneously occur respective chemical reactions under the same sunlight in the same site, so that the energy of full spectrum of sunlight is fully utilized, the photoelectric energy conversion efficiency of the whole system is improved, the utilization rate of sunlight is improved, the influence of wave band such as ultraviolet on the aging of photovoltaic material is avoided, the service life of photovoltaic material is prolonged, the structure is simple, easy to system integration, easy to install, and can be conveniently and widely applied in photovoltaic light-heat comprehensive system. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a principle structure schematic diagram of an optical splitting system provided by an embodiment of the present application;

[0025] Figure 2 is a structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application;

[0026] Figure 3 is another structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application;

[0027] Figure 4 is still another structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application;

[0028] Figure 5 is still another structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application;

[0029] Figure 6 is still another structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application;

[0030] Figure 7 is still another structure schematic diagram of a beamsplitter module and a photovoltaic module provided by an embodiment of the present application. DETAILED DESCRIPTION

[0031] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the convenience of description, only the parts related to the present application are shown in the drawings, but not all the structures.

[0032] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. It should be noted that the orientation words such as "upper", "lower", "left", "right" and the like described in the embodiments of the present application are described with the angle shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, it should be understood in the context that when referring to an element formed "on" or "under" another element, it can be directly formed "on" or "under" another element, or indirectly formed "on" or "under" another element through an intermediate element. The terms "first", "second" and the like are only for the purpose of description, and do not represent any order, quantity or importance, but are only used to distinguish different components. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0033] The term "comprising" and variations thereof as used herein is used inclusively, i.e., "comprising but not limited to." The term "based on" means "based at least in part on." The term "one embodiment" means "at least one embodiment."

[0034] It should be noted that the terms "first", "second", and the like in the present utility model are only used to distinguish the corresponding content, and are not used to limit the order or mutual dependence.

[0035] It should be noted that the modification of "one" and "multiple" mentioned in the present utility model is illustrative and not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0036] Figure 1 is a schematic diagram of the principle structure of an optical light splitting system provided by an embodiment of the present utility model, as shown in Figure 1 The optical light splitting system includes a light splitting mirror module 10, a photovoltaic component module 20, and a light-heat receiving module 30. The light splitting mirror module 10 includes a first surface and a second surface that face away from each other. In the direction in which the first surface points to the second surface, the first surface and the second surface are convex, and the curvature of the light splitting mirror module 10 is variable. The light splitting mirror module 10 reflects the light of a specific waveband in the sunlight incident from the side of the first surface to obtain a converging light beam, and transmits the light of a non-specific waveband in the incident sunlight to obtain a scattering light beam. The light-heat receiving module 30 is located on the propagation path of the converging light beam, and the photovoltaic component module 20 is located on the propagation path of the scattering light beam.

[0037] Specifically, the optical light splitting system can be applied in a photovoltaic and light-heat system. The optical light splitting system includes a light splitting mirror module 10, a photovoltaic component module 20, and a light-heat receiving module 30. The light splitting mirror module 10 includes a first surface and a second surface that face away from each other, and both the first surface and the second surface are curved surfaces. Sunlight can be incident to the side of the first surface. The light splitting mirror module 10 can perform light splitting processing on the received sunlight to obtain corresponding light of a specific waveband and light of a non-specific waveband. Based on the curvature characteristics of the light splitting mirror module 10 and the concave-convex characteristics of the first surface and the second surface of the light splitting mirror module 10, the light splitting mirror module 10 can reflect the light of a specific waveband in the sunlight to obtain a converging light beam and provide it to the light-heat receiving module 30. The light splitting mirror module 10 can transmit the light of a non-specific waveband in the sunlight to obtain a scattering light beam and provide it to the photovoltaic component module 20. Exemplarily, the photovoltaic component module 20 can be an existing photovoltaic cell, photovoltaic component, photovoltaic device, etc. Exemplarily, the light-heat receiving module 30 can perform light processing, in which case it can be a photovoltaic cell, photovoltaic component, photovoltaic device, etc., or it can perform heat processing, in which case it can be graphite, a heat pipe, etc.

[0038] It should be noted that the required sunlight waveband for the chemical material reaction in the photovoltaic module 20 and the photo-thermal receiving module 30 is different, that is, the light splitting module 10 can realize the transmission of the light required by the photovoltaic module 20 to the photovoltaic module 20, and the filtering and reflection of the light not required by the photovoltaic module 20 to the photo-thermal receiving module 30 (in other words, the light splitting module 10 can realize the reflection of the light required by the photo-thermal receiving module 30 to the photo-thermal receiving module 30, and the filtering and transmission of the light not required by the photo-thermal receiving module 30 to the photovoltaic module 20), and the full waveband of sunlight can be utilized by photochemical materials or thermal chemical materials, so that different chemical materials can simultaneously undergo respective chemical reactions under the same sunlight in the same place, thereby fully utilizing the energy of the full spectrum of sunlight. In addition, the specific waveband of sunlight defined in the embodiment is ultraviolet light (the waveband of ultraviolet light can be 300-400 nm) and near-infrared light (the waveband of near-infrared light can be 1200-3000 nm), and the non-specific waveband of light can be visible light, so that the light splitting module 10 can separate ultraviolet light and near-infrared light from visible light, so that ultraviolet light and near-infrared light are filtered and reflected, visible light is transmitted, and ultraviolet light and near-infrared light are provided to the photo-thermal receiving module 30, so that the photo-thermal receiving module 30 is subsequently converted into electrical energy by photoelectric effect or converted into thermal energy by photo-thermal effect, and visible light is provided to the photovoltaic module 20, so that the photovoltaic module 20 is subsequently converted into electrical energy by photoelectric effect. At this time, the ultraviolet light and near-infrared light in the sunlight will not be incident on the photovoltaic module 20, and the influence of ultraviolet light and near-infrared light on the aging of the material in the photovoltaic module 20 can be further avoided.

[0039] The curvature of the light splitting module 10 is variable, and the photo-thermal receiving module 30 is located on the propagation path of the converging light beam, that is, the focal length of the converging light beam corresponding to the light splitting module 10 is variable and adjustable, and further, the position of the photo-thermal receiving module 30 on the propagation path of the converging light beam is variable and adjustable, for example, the photo-thermal receiving module 30 can be located at the focal length of the converging light beam, thereby further improving the utilization rate of sunlight. In addition, the adjustment and change of the curvature of the light splitting module 10 can be realized by the liftable connecting rods, each liftable connecting rod can correspondingly change the height at each position of the light splitting module 10, so that the light splitting module 10 becomes a free-form surface.

[0040] In addition, it can be understood that the core of improving the overall conversion efficiency of the full-spectrum solar energy system is to actively separate the light of each wave band according to the reaction needs of the corresponding photovoltaic component module 20 and the light-heat receiving module 30 through the beam splitter module 10, to realize independent control of photovoltaic and light-heat, and the basic idea is to separate and control the frequency of the solar spectrum, irradiate the visible light part in the sunlight to the solar cell of the photovoltaic component module 20, directly convert it into electric energy, and irradiate the other large amount of photons to the light-heat medium of the light-heat receiving module 30, convert it into heat energy and store it for use when needed through thermoelectric power generation, so as to enhance the stability of the entire system power generation.

[0041] The technical scheme in the embodiment of the utility model, this optical beam splitting system includes beam splitter module, photovoltaic component module and light-heat receiving module;The beam splitter module includes mutually divergent first surface and second surface, in the direction of the first surface pointing to the second surface, the first surface and the second surface are convex, and the curvature of the beam splitter module is variable;The beam splitter module reflects the light of a specific wave band in the sunlight incident on the first surface side, obtains a convergent light beam, and transmits the light of a non-specific wave band in the incident sunlight, obtaining a scattered light beam;The light-heat receiving module is located on the propagation path of the convergent light beam, and the photovoltaic component module is located on the propagation path of the scattered light beam. In the optical beam splitting system, the received sunlight is processed by the beam splitter module to provide the light of a specific wave band in the sunlight to the light-heat receiving module and the light of a non-specific wave band in the sunlight to the photovoltaic component module, and the required sunlight wave band of the chemical materials in the photovoltaic component module and the light-heat receiving module is different, that is, the beam splitter module can transmit the light required by the photovoltaic component module to the photovoltaic component module, filter and reflect the light not required by the photovoltaic component module to the light-heat receiving module, and the full wave band of the sunlight can be utilized by the photochemical material or the thermochemical material, so that different chemical materials can simultaneously undergo respective chemical reactions under the same sunlight in the same place, thereby fully utilizing the energy of the full spectrum of the sunlight, improving the photoelectric energy conversion efficiency of the entire system, improving the utilization rate of the sunlight, avoiding the influence of the wave band such as ultraviolet on the aging of the photovoltaic material, prolonging the service life of the photovoltaic material, and being simple in structure, easy to integrate, easy to install, and capable of being conveniently and widely applied in the photovoltaic and light-heat comprehensive system.

[0042] Optionally, with reference to Figure 1 The material of the light-heat receiving module 30 includes a light-conducting material or a heat-conducting material. Exemplarily, the light-conducting material can be a perovskite material or other photochemical material, and the heat-conducting material can be a graphite metal or other thermochemical material.

[0043] In a specific embodiment, optionally, Figure 2is a kind of structure schematic diagram of spectroscope module and photovoltaic module module provided in the utility model embodiment, as shown in Figure 2 Spectroscope module 10 includes a spectroscope unit 11 and a light splitting coating 12, and the light splitting coating 12 is located on the side surface of the spectroscope unit 11;The light splitting coating 12 separates the light of specific wave band from the light of non-specific wave band in the incident sunlight, wherein the light of specific wave band is reflected by the light splitting coating 12, and convergent light beam is generated under the condensing effect of the spectroscope unit 11, and the light of non-specific wave band is transmitted through the spectroscope unit 11 and the light splitting coating 12 in turn, and scattering light beam is generated.

[0044] Specifically, the light splitting coating 12 can reflect only the wavelength or bandwidth of one light or simultaneously reflect the wavelength or bandwidth of multiple lights.Exemplarily, the light of specific wave band can be ultraviolet light and near-infrared light, and the light splitting coating 12 shown in Figure 2 Can reflect ultraviolet light and near-infrared light simultaneously. Figure 2 The spectroscope unit 11 and the photovoltaic module module 20 are combined as a whole structure, the spectroscope unit 11 is arranged on the side of the photovoltaic module module 20 close to sunlight, and the light splitting coating 12 is located on the side surface of the convex side of the spectroscope unit 11, that is, the light splitting coating 12 is located on the side of the spectroscope unit 11 away from sunlight, at this time, the side of the light splitting coating 12 away from the spectroscope unit 11 can be provided with a protective film layer 40, or the protective film layer 40 can not be provided, and the side of the photovoltaic module module 20 away from the spectroscope unit 11 can be provided with a protective film layer 40 to protect the normal reaction of the chemical material in the photovoltaic module module 20 and avoid the interference of external environment on the normal operation of the photovoltaic module module 20.In addition, it can be understood that the spectroscope unit 11 and the photovoltaic module module 20 are combined as a whole structure, the spectroscope unit 11 is arranged on the side of the photovoltaic module module 20 close to sunlight, and the light splitting coating 12 can also be located on the side surface of the concave side of the spectroscope unit 11, that is, the light splitting coating 12 is located on the side of the spectroscope unit 11 close to sunlight, and the side of the light splitting coating 12 away from the spectroscope unit 11 can be provided with a protective film layer 40, and the side of the photovoltaic module module 20 away from the spectroscope unit 11 can also be provided with a protective film layer 40, to further protect the material in the light splitting coating 12 and the material in the photovoltaic module module 20 from the interference of external environment.

[0045] Figure 3 is another structure schematic diagram of spectroscope module and photovoltaic module module provided in the utility model embodiment, Figure 3The illustrated beamsplitter unit 11 and photovoltaic module 20 are connected in a split structure, the beamsplitter unit 11 and photovoltaic module 20 are separated by a distance, the beamsplitter unit 11 and photovoltaic module 20 can be split by a connecting piece 50, the beamsplitter unit 11 is arranged on the side of the photovoltaic module 20 close to sunlight, the beamsplitting coating 12 is located on the convex side surface of the beamsplitter unit 11, that is, the beamsplitting coating 12 is located on the side of the beamsplitter unit 11 away from sunlight, and the beamsplitter unit 11 and the photovoltaic module 20 are placed obliquely, and the beamsplitter unit 11 and the photovoltaic module 20 can be fixed on the ground through corresponding mirror frames. In addition, the beamsplitting coating 12 can also be located on the concave side surface of the beamsplitter unit 11, that is, the beamsplitting coating 12 is located on the side of the beamsplitter unit 11 close to sunlight.

[0046] Figure 4 It is another structure schematic view of the beamsplitter module and the photovoltaic module provided by the embodiment of the utility model, Figure 4 The illustrated beamsplitter unit 11 and photovoltaic module 20 are placed in a distributed structure, the beamsplitter unit 11 and photovoltaic module 20 are separated by a distance, Figure 4 The distance between the beamsplitter unit 11 and the photovoltaic module 20 can be greater than or equal to Figure 3 The distance between the beamsplitter unit 11 and the photovoltaic module 20, the beamsplitter unit 11 is arranged on the side of the photovoltaic module 20 close to sunlight, the beamsplitting coating 12 is located on the convex side surface of the beamsplitter unit 11, that is, the beamsplitting coating 12 is located on the side of the beamsplitter unit 11 away from sunlight, and the beamsplitter unit 11 and the photovoltaic module 20 are placed obliquely, and the beamsplitter unit 11 and the photovoltaic module 20 can be fixed on the ground through corresponding mirror frames. In addition, the beamsplitting coating 12 can also be located on the concave side surface of the beamsplitter unit 11, that is, the beamsplitting coating 12 is located on the side of the beamsplitter unit 11 close to sunlight.

[0047] It should be noted that, Figure 2 、 Figure 3 and Figure 4 The illustrated beamsplitter unit 11 and photovoltaic module 20 are placed in a distributed structure, the beamsplitter unit 11 and photovoltaic module 20 are separated by a distance,

[0048] The above-described light-splitting coating 12 is located on the convex side surface of the light-splitting mirror unit 11, or the light-splitting coating 12 is located on the concave side surface of the light-splitting mirror unit 11, of course, in yet another embodiment, the light-splitting coating 12 can include two parts, one part of the light-splitting coating 12 is located on the convex side surface of the light-splitting mirror unit 11, which can reflect part of the light of a specific waveband in the incident sunlight, and the other part of the light-splitting coating 12 is located on the concave side surface of the light-splitting mirror unit 11, which can reflect another part of the light of a specific waveband in the incident sunlight. That is, optionally, the light-splitting mirror module 10 includes a light-splitting mirror unit 11, a first light-splitting coating and a second light-splitting coating, the first light-splitting coating and the second light-splitting coating are respectively located on the two side surfaces of the light-splitting mirror unit 11 which are away from each other, and the first light-splitting coating is located on the side of the light-splitting mirror unit 11 which is away from the photovoltaic module 20, and the second light-splitting coating is located on the side of the light-splitting mirror unit 11 which is close to the photovoltaic module 20; the first light-splitting coating separates the light of a first specific sub-waveband from the light of a non-first specific sub-waveband in the incident sunlight, wherein the light of the first specific sub-waveband is reflected by the first light-splitting coating, and the light of the non-first specific sub-waveband is transmitted through the light-splitting mirror unit 11; the second light-splitting coating separates the light of a second specific sub-waveband from the light of a non-second specific sub-waveband in the incident light of the non-first specific sub-waveband, wherein the light of the second specific sub-waveband is reflected by the second light-splitting coating, and the light of the first specific sub-waveband and the light of the second specific sub-waveband generate a convergent light beam under the light converging effect of the light-splitting mirror unit 11, and the light of the non-second specific sub-waveband is transmitted through the second light-splitting coating; wherein the sum of the first specific sub-waveband of the reflected light corresponding to the first light-splitting coating and the second specific sub-waveband of the reflected light corresponding to the second light-splitting coating is a specific waveband.

[0049] Exemplarily, the first specific sub-waveband can be an ultraviolet waveband, and the second specific sub-waveband can be a near-infrared waveband, or the first specific sub-waveband can be a near-infrared waveband, and the second specific sub-waveband can be an ultraviolet waveband. The embodiment is only exemplified and is not limited. Taking the first specific sub-waveband as an ultraviolet waveband and the second specific sub-waveband as a near-infrared waveband as an example, the first light-splitting coating can separate the light of the first specific sub-waveband (i.e., ultraviolet light) from the light of non-first specific sub-waveband (i.e., near-infrared light and visible light) in the incident sunlight, and the light of the first specific sub-waveband (i.e., ultraviolet light) is reflected by the first light-splitting coating and incident to the photothermal receiving module 30, and the light of non-first specific sub-waveband (i.e., near-infrared light and visible light) is transmitted through the light-splitting mirror unit 11, i.e., incident to the second light-splitting coating. The second light-splitting coating can separate the light of the second specific sub-waveband (i.e., near-infrared light) from the light of non-second specific sub-waveband (i.e., visible light) in the incident light of non-first specific sub-waveband (i.e., near-infrared light and visible light), and the light of the second specific sub-waveband (i.e., near-infrared light) is reflected by the second light-splitting coating and incident to the photothermal receiving module 30, and the light of non-second specific sub-waveband (i.e., visible light) is transmitted through the second light-splitting coating and incident to the photovoltaic component module 20.

[0050] In another specific embodiment, optionally, Figure 5 is another structure schematic diagram of a light-splitting mirror module and a photovoltaic component module provided by the embodiment of the present application, as shown in Figure 5 The light-splitting mirror module 10 includes at least two light-splitting mirror units 11 and at least two light-splitting coatings 12, the number of the light-splitting mirror units 11 is the same as the number of the light-splitting coatings 12, and the light-splitting coatings 12 are located on one side surface of the light-splitting mirror units 11 one by one; the light-splitting coating 12 corresponding to the first light-splitting mirror unit 11 separates the light of a specific sub-waveband from the light of non-specific sub-waveband in the incident sunlight, and the other light-splitting mirror units 12 are sequentially located on the propagation path of the light of non-specific sub-waveband, the specific sub-waveband of the reflected light corresponding to each light-splitting coating 12 is different, and the sum of the specific sub-wavebands of the reflected light corresponding to each light-splitting coating 12 is a specific waveband.

[0051] Specifically, the light-splitting coating 12 is located on the side surface of the corresponding light-splitting mirror unit 11, for example, the light-splitting coating 12 can be located on the side surface of the corresponding light-splitting mirror unit 11 close to the sunlight, or the light-splitting coating 12 can also be located on the side surface of the corresponding light-splitting mirror unit 11 away from the sunlight. Optionally, the light-splitting coating 12 corresponding to the first light-splitting mirror unit 11 is located on the side surface of the convex of the light-splitting mirror unit 11. That is, for the light-splitting mirror unit 11 closest to the sunlight, the light-splitting coating 12 corresponding to the light-splitting mirror unit 11 is arranged on the side surface away from the sunlight, so that the damage and influence of environmental factors on the light-splitting coating 12 can be effectively prevented. In addition to the first light-splitting mirror unit 11, the light-splitting coating 12 corresponding to the other light-splitting mirror units 11 can be arranged on the side surface away from the sunlight, or the light-splitting coating 12 corresponding to the other light-splitting mirror units 11 can be arranged on the side surface close to the sunlight, or part of the light-splitting coating 12 corresponding to the other light-splitting mirror units 11 can be arranged on the side surface away from the sunlight, and the remaining light-splitting coating 12 corresponding to the other light-splitting mirror units 11 can be arranged on the side surface close to the sunlight. In addition, for any one of the light-splitting mirror units 11 and the light-splitting coating 12 corresponding thereto, for example, the light-splitting coating 12 can be located on the side of the light-splitting mirror unit 11 away from the sunlight, or the light-splitting coating 12 can also be located on the side surface of the concave of the light-splitting mirror unit 11, or the light-splitting coating 12 can include two parts, one part of the light-splitting coating 12 is located on the side surface of the convex of the light-splitting mirror unit 11, which can reflect part of the light of a specific wave band in the incident sunlight, and the other part of the light-splitting coating 12 is located on the side surface of the concave of the light-splitting mirror unit 11, which can reflect another part of the light of a specific wave band in the incident sunlight. The present embodiment is only an example and is not limited.

[0052] Figure 5 The light-splitting mirror unit 11 and the photovoltaic module 20 are shown as a structure combined as a whole, the light-splitting mirror units 11 are sequentially stacked, the light-splitting mirror units 11 are arranged on the side of the photovoltaic module 20 close to the sunlight, and the side of the photovoltaic module 20 away from the light-splitting mirror units 11 can also be provided with a protective film layer 40 to protect the normal reaction of the chemical material inside the photovoltaic module 20 and avoid the interference of the external environment on the normal operation of the photovoltaic module 20.

[0053] Figure 6 is another structure schematic view of a light-splitting mirror module and a photovoltaic module provided by the embodiment of the present application, Figure 6The spectroscope unit 11 and the photovoltaic module 20 are connected in a split structure, the last spectroscope unit 11 and the photovoltaic module 20 are separated by a distance, the spectroscope unit 11 and the photovoltaic module 20 can be split through the connecting piece 50, the spectroscope units 11 are also split through the connecting piece 50 in sequence, the spectroscope units 11 are arranged on the side of the photovoltaic module 20 close to sunlight, and the spectroscope units 11 and the photovoltaic module 20 are placed obliquely, and the spectroscope units 11 and the photovoltaic module 20 can be fixed on the ground through corresponding mirror frames.

[0054] Figure 7 It is another structure schematic view of the spectroscope module and the photovoltaic module provided by the embodiment of the utility model, Figure 7 The spectroscope unit 11 and the photovoltaic module 20 are distributedly placed, the last spectroscope unit 11 and the photovoltaic module 20 are separated by a distance, Figure 7 The distance between the last spectroscope unit 11 and the photovoltaic module 20 can be greater than or equal to Figure 6 The distance between the last spectroscope unit 11 and the photovoltaic module 20, and the spectroscope units 11 are also placed at intervals in sequence, the spectroscope units 11 are arranged on the side of the photovoltaic module 20 close to sunlight, and the spectroscope units 11 and the photovoltaic module 20 are placed obliquely, and the spectroscope units 11 and the photovoltaic module 20 can be fixed on the ground through corresponding mirror frames.

[0055] It should be noted that, Figure 5 , Figure 6 and Figure 7 The spectroscope unit 11 and the photovoltaic module 20 are distributedly placed, the last spectroscope unit 11 and the photovoltaic module 20 are separated by a distance,

[0056] Optionally, continuing to refer to Figures 2-7 The spectroscope coating 12 is composed of dielectric thin layer materials with different refractive indexes and different thicknesses, or is composed of metal and dielectric thin layer materials deposited alternately.

[0057] Specifically, the light-splitting coating 12 can reflect light rays in a specific waveband, and can reflect only one wavelength or bandwidth of light rays or multiple wavelengths or bandwidths of light rays. The thickness of the light-splitting coating 12 can be in the range of nanometers to microns. The thin-layer material in the light-splitting coating 12 needs to have a certain dispersion relationship. Exemplarily, the dielectric thin-layer material can be, but is not limited to, TiO2, SiO2, ZnO, Al2O3, HfO2, Si3N4, and oxide ceramics or composite oxide ceramics containing the above oxides, such as calcium titanate, magnesium titanate, barium titanate, and the like. The metal thin-layer material can be, but is not limited to, gold, silver, aluminum, copper, chromium, platinum, and the like. The embodiment herein is only exemplary and is not limited.

[0058] Optionally, with reference back to Figures 2-7 , the light-splitting mirror unit 11 has a polygonal shape in a projection on a first plane, and any side of the polygon has a length greater than 600 nm; wherein the first plane is perpendicular to the thickness direction of the light-splitting mirror unit 11.

[0059] Specifically, the light-splitting mirror unit 11 has a polygonal shape in a cross section perpendicular to the thickness direction of the light-splitting mirror unit 11, and the embodiment herein limits the side length of the polygon, which can further ensure that the light-splitting mirror unit 11 has sufficient area to receive, reflect, and transmit sunlight, thereby improving the photoelectric conversion efficiency of the overall system.

[0060] Optionally, with reference back to Figures 2-7 , the thickness of the light-splitting mirror unit 11 ranges from 0.5 mm to 5 mm.

[0061] Optionally, with reference back to Figures 2-7 , the material of the light-splitting mirror unit 11 includes at least one of ultra-white glass or high borosilicate glass.

[0062] Optionally, with reference back to Figures 2-7 , the height difference between the edge of the light-splitting mirror unit 11 and the center of the light-splitting mirror unit 11 ranges from 0.3 mm to 100 mm. In this way, the concave-convex shape of the light-splitting mirror unit 11 can be controlled in this range, so that the curvature of the light-splitting mirror unit 11 is variable and adjustable, i.e., the curvature of the light-splitting mirror module 10 is variable and adjustable.

[0063] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjust, mutual combination and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application are described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, it can also include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. An optical beam splitting system, characterized in that, This includes a beam splitter module, a photovoltaic module module, and a photothermal receiver module; The beam splitter module includes a first surface and a second surface that are opposite to each other. In the direction from the first surface to the second surface, the first surface and the second surface are convex, and the curvature of the beam splitter module is variable. The beam splitter module reflects light of a specific wavelength from the sunlight incident on one side of the first surface to obtain a converging beam, and transmits light of a non-specific wavelength from the incident sunlight to obtain a scattered beam. The photothermal receiving module is located on the propagation path of the converging beam, and the photovoltaic module is located on the propagation path of the scattering beam.

2. The optical beam splitting system according to claim 1, characterized in that, The beam splitter module includes a beam splitter unit and a beam splitter coating, the beam splitter coating being located on one side surface of the beam splitter unit; The beam-splitting coating separates the light of a specific wavelength band from the light of a non-specific wavelength band in the incident sunlight. The light of the specific wavelength band is reflected by the beam-splitting coating and, under the focusing effect of the beam-splitting mirror unit, generates the converging beam. The light of the non-specific wavelength band is transmitted sequentially through the beam-splitting mirror unit and the beam-splitting coating to generate the scattering beam.

3. The optical beam splitting system according to claim 1, characterized in that, The beam splitter module includes a beam splitter unit, a first beam splitter coating, and a second beam splitter coating. The first beam splitter coating and the second beam splitter coating are respectively located on opposite sides of the beam splitter unit, and the second beam splitter coating is located on the side of the beam splitter unit closer to the photovoltaic module. The first beam-splitting coating separates the light of a first specific sub-wavelength band from the light of non-first specific sub-wavelength band in the incident sunlight, wherein the light of the first specific sub-wavelength band is reflected by the first beam-splitting coating, and the light of non-first specific sub-wavelength band is transmitted through the beam-splitting mirror unit; The second beam-splitting coating separates the light of the second specific sub-wavelength band from the incident light of the non-first specific sub-wavelength band. The light of the second specific sub-wavelength band is reflected by the second beam-splitting coating, and the light of the first specific sub-wavelength band and the light of the second specific sub-wavelength band are combined by the focusing effect of the beam-splitting mirror unit to generate the converging beam. The light of the non-second specific sub-wavelength band is transmitted through the second beam-splitting coating. The specific wavelength band is the sum of the first specific sub-wavelength band of the reflected light corresponding to the first beam-splitting coating and the second specific sub-wavelength band of the reflected light corresponding to the second beam-splitting coating.

4. The optical beam splitting system according to claim 1, characterized in that, The beam splitter module includes at least two beam splitter units and at least two beam splitter coatings. The number of beam splitter units is the same as the number of beam splitter coatings, and the beam splitter coatings are located one-to-one on one side surface of the beam splitter unit. The beam-splitting coating corresponding to the first beam-splitting unit separates the light of a specific sub-wavelength band from the light of a non-specific sub-wavelength band in the incident sunlight. The other beam-splitting units are located sequentially on the propagation path of the light of the non-specific sub-wavelength band. The specific sub-wavelength band of the reflected light corresponding to each beam-splitting coating is different, and the sum of the specific sub-wavelength bands of the reflected light corresponding to each beam-splitting coating is the specific wavelength band.

5. The optical beam splitting system according to claim 4, characterized in that, The beam-splitting coating corresponding to the first beam-splitting unit is located on the convex side surface of the beam-splitting unit.

6. The optical beam splitting system according to any one of claims 2-4, characterized in that, The spectral coating is composed of dielectric thin-film materials with different refractive indices and thicknesses, or is composed of alternating depositions of metal and the dielectric thin-film materials.

7. The optical beam splitting system according to any one of claims 2-4, characterized in that, The projection shape of the beam splitter unit on the first plane is a polygon, and the length of any side of the polygon is greater than 600 nm; wherein, the first plane is perpendicular to the thickness direction of the beam splitter unit. And / or, the thickness of the beam splitter unit is in the range of 0.5mm-5mm.

8. The optical beam splitting system according to any one of claims 2-4, characterized in that, The height difference between the edge of the beam splitter unit and the center of the beam splitter unit ranges from 0.3mm to 100mm.

9. The optical beam splitting system according to any one of claims 2-4, characterized in that, The material of the beam splitter unit includes at least one of ultra-white glass or borosilicate glass.

10. The optical beam splitting system according to claim 1, characterized in that, The materials used in the photothermal receiving module include light-conducting materials or heat-conducting materials.

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